Multiple Choice
A wheat farmer is concerned that his land has been depleted of nitrogen. What steps can he take to make sure his wheat crops have enough nitrogen for the next season?
A) He can plant alfalfa on his land and let it serve as "green manure."
B) He can treat his land with man-made fertilizers, thanks to Haber and Bosch.
C) He can continue to plant his wheat crops, because wheat can form root nodules.
D) He can treat his land with phosphate fertilizers.
Correct Answer:

Verified
Correct Answer:
Verified
Q160: From personal experience, you may have noticed
Q161: You are studying two closely related tree
Q162: Guard cells can actively increase their volume
Q163: Grapes growing on a vine are observed
Q164: Root activities are all passive, requiring no
Q166: Which of the following is false regarding
Q167: A researcher determines that her favorite plant
Q168: You are growing C<sub>3</sub> and C<sub>4</sub> plants
Q169: At the "source" end of the phloem,
Q170: Why would a farmer allow a field